AMSv2 sd: do not try to switch sd cards into high-speed mode.

High-speed mode is only half implemented (sd controller still uses normal speed) and causes card detection problems.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29660 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 0 insertions, 29 deletions

diff --git a/firmware/target/arm/as3525/sd-as3525v2.c b/firmware/target/arm/as3525/sd-as3525v2.c
index 67ef7b34ef..73816e5537 100644
--- a/firmware/target/arm/as3525/sd-as3525v2.c
+++ b/firmware/target/arm/as3525/sd-as3525v2.c
@@ -549,40 +549,11 @@ static int sd_init_card(const int drive)
     /*  Card back to full speed  */
     MCI_CLKDIV &= ~(0xFF);    /* CLK_DIV_0 : bits 7:0 = 0x00 */
 
-    if (sd_v2)
-    {
-        /* Attempt to switch cards to HS timings, non HS cards just ignore this */
-        /*  CMD7 w/rca: Select card to put it in TRAN state */
-        if(!send_cmd(drive, SD_SELECT_CARD, card_info[drive].rca, MCI_RESP, &response))
-            return -7;
-
-        if(sd_wait_for_tran_state(drive))
-            return -8;
-
-        /* CMD6 */
-        if(!send_cmd(drive, SD_SWITCH_FUNC, 0x80fffff1, MCI_RESP, &response))
-            return -9;
-
-        /* This delay is a bit of a hack, but seems to fix card detection
-           problems with some SD cards (particularly 16 GB and bigger cards).
-           Preferably we should handle this properly instead of using a delay,
-           see also FS#11870. */
-        sleep(HZ/10);
-
-        /*  We need to go back to STBY state now so we can read csd */
-        /*  CMD7 w/rca=0:  Deselect card to put it in STBY state */
-        if(!send_cmd(drive, SD_DESELECT_CARD, 0, MCI_NO_RESP, NULL))
-            return -10;
-    }
-
     /* CMD9 send CSD */
     if(!send_cmd(drive, SD_SEND_CSD, card_info[drive].rca,
                  MCI_RESP|MCI_LONG_RESP, card_info[drive].csd))
         return -11;
 
-    /* Another delay hack, see FS#11798 */
-    mci_delay();
-
     sd_parse_csd(&card_info[drive]);
 
     if(drive == INTERNAL_AS3525) /* The OF is stored in the first blocks */